<style>
    img
    {
    position: absolute;
    left: 0px;
    top: 0px;
    z-index: -1;
    }
    h1
    {
    z-index: 1;
    position: absolute;
    top: 220px;
    }
</style>
<img src="OpenGenus.jpg" alt="OpenGenus Logo">
<h1> This is overlap Heading over OpenGenus Logo </h1>